Antretter M, Färber S, Immler L, Perktold M, Posch D, Raschner C, Wachholz F, Burtscher M. The Hatfield-System versus the Weekly Undulating Periodised Resistance Training in trained males: Effects of a third mesocyle. J. Hum. Sport Exerc. [Internet]. 2019 Sep. 2 [cited 2024 Apr. 25];14(3):599-607. Available from: https://www.jhse.ua.es/article/view/2019-v14-n3-hatfield-system-weekly-undulating-periodised-resista